barta



Jan. 31, 1956 J. F. BARTA 2,732,868

ROTATABLE WORK PIECE SUPPORT AND CLAMP Filed Feb. 9, 1953 27 29'INVENTOR.

JOSEPH F. BARTPr Un t a??? ;,aee..r* 1??? ROTATABLE WORK PIECE SUPPORTAND CLAMP Joseph F. Barta, Milwaukee, Wis.

Application February 9, 1953, Serial No. 335,905

1 Claim. (Cl. 144-288) My invention relates to work piece supports andmore particularly to a support for a work piece while it is being workedon.

The prime object of my invention is to provide such a support that isadjustable for clamping a piece of linoleum or the like while thesurface thereof 'is' beingcarved.

Another object of my invention is to provide a rotatable support for ablock of linoleum or work piece, which support may be clamped to a worktable or the like, permitting free use of both hands while the tools aremoved in .a direction away from the operator and enabling the support tobe revolved with one hand while the carving tool is being manipulatedwith the other hand by the operator.

It is manifest to anyone familiar with the art of carving linoleum thatit is far more economical to use portions of linoleum onto which adesign is to be carved, before mounting the finished portion onto ablock by means of an adhesive agent. Inasmuch as, if the design is notproperly executed, the portion of linoleum only is wasted and may bereplaced with a new portion which is comparatively inexpensive, prior tobeing mounted onto the conventional wood block. It is also manifest thatquite frequently for home use and when only a few prints are to bereproduced, it is not necessary or convenient to mount the carvedportion of linoleum onto a block. It is, therefore, advantageous to workon the unmounted sheet of linoleum and the device as illustrated,described and claimed herein provides a means for supporting the sheetof linoleum onto a revolving surface plate by means of adjustableclamps, which surface plate is mounted onto a base arranged forfastening to the surface of a work bench or the like. This arrangementpermits the operator to manipulate the carving tool with one hand andrevolve the surface plate supporting the linoleum with the other hand,and inasmuch as the base supporting the surface plate is clamped to awork bench, the carving tool can always be pushed away from the operatorthereby eliminating all danger or hazards.

Other and further objects of my invention will become more apparent asthe description proceeds when taken in conjunction with the drawings, inwhich:

Figure l is a perspective view of the entire assembled device equippedwith a conventional C clamp attached to the base by means of a chain.

Figure 2 is a longitudinal cross-section of the assembled device asshown in Figure 1, and clamped to the surface of a work bench by meansof a C clamp, and

Figure 3 is a top or plan view of the assembled device.

Similar characters of reference indicate corresponding parts throughoutthe several views and referring now to the same, the character shows abase which may be of rectangular construction as shown, or beconstructed in any other shape or form. Onto the base 10 is mounted asurface plate shown as 11 which may also be of any shape or contour. Thesurface plate 11 is mounted to the base 10 by means of the center boltshown as 12 which, obviously, is provided with a flat head, and the bot-2 tom of the base 10 is shown recessed to accommodate the nut shown as13 on the center bolt 12. H Y

There is also shown a spacer washer 14 disposed between the base 10 andthe surface plate 11. This spacer washer 14 provides coefficient offriction between the surface plate 11 and the base 10 when the bolt 12is fastened and when the surface plate 11 is revolved on the base 10,

There is a recess shown as 15 on the forward end of the base 10 which isarranged to accommodate the C clamp shown as 16 and which is shown inFigure 1, attached to the base 10 by means of a chain shown as 17 or byany other method, so that the C clamp 16 is readily accessible for theoperator when the device is to be used.

The work bench is shown as 18 in Figure 2, and may be of any shape ordesign to support the entire assembled device when the work is beingdone.

The surface plate 11 has an elongated slot 19 extending therethrough.This slot 19 supports a bolt 20 which is equipped with a washer 21 atits top and a wing nut 22 is threadedly engaging the bolt 20. Obviously,the slot 19 is off-center and is oppositely disposed from a work supportshown as 23 which is elongated in lateral relation to the base 10. Thiswork support 23 has an inwardly projecting beveled edge 24 which wedgesand supports the work piece or sheet of linoleum shown as 25. The worksupport 23 is also provided with bolts shown as 26 and 26 having wingnuts 27 and 27 at the top and having heads 28 engaging a pair of slotsshown as 29 and 29' in Figure 3 to permit adjustment of the work support23 on the surface of the plate 11.

In operation, the base 10 is clamped to the surface of the work bench 18by means of the C clamp shown as 16. This rigidly supports the entireassembled device and holds it in position while it is being worked on.

A sheet of linoleum shown as 25 is then placed onto the surface of thesurface plate 11, is held in alignment by means of the work support 23and is clamped into position by means of the washer 21 held by means ofthe bolt 20 which slidably moves within the slot 19 extending throughthe surface plate 11. In this manner, the work piece or linoleum 25 canbe securely held in position while the operator does the carving on thesurface of the work piece and it is possible for him to revolve thesurface plate 11 with one hand while he is manipulating the carving toolwith the other hand and always in a position whereby he can push histool away from him rather than toward him to eliminate any hazard thatmight be encountered due to the sharp tip of the carving tool.

It is also possible for him to revolve the table or surface plate 11while he is doing the carving when there are lines to be made of radialcontour, or of uneven contour thereby making it easier for him to carvethe design sketched onto the work piece on linoleum.

In the chosen embodiments of my invention, there are many features notheretofore disclosed in the prior art, and although I have shown aparticular arrangement of the component parts constituting the device, Iam fully cognizant of the fact that many changes in the form andconfiguration of these component parts may be made without aifectingtheir operative'ness and without affecting the spirit of my invention orthe scope of the appended claim.

Having thus described my invention, what I claim and desire to secure byLetters Patent in the United States is:

A device of the character described comprising a base, a flat surfaceplate rotatably mounted on the upper face of said base, said base havingan area greater than said surface plate, said surface plate beingprovidedwith a pair of spaced elongated parallel slots positionedinwardly of one edge of said surface plate, a work support,

, 3 clamping means extending through said work support and said slots,said work support extending upwardly be yond the face of said surfaceplate, said surface plate further having a single elongated slot formedtherein at arr-edge opposite said-pair of' parallel slots and positionedmedially between said pair of slots, and a work clampingibolt positionedand-secured in said single slot.

. References Cited the file of this patent 'UNITED STATES PATENTS' A559,162 Brown Apr. 2's, 1896 4 4 Yarnell July 30, 1901 Sinning et al.June 22, 1909 Bartlett Nov. 23, 1915 Dugan Dec. 12, 1916 Adsit Dec. 9,1919 Andrew June 26, 1928 Lundell May 30, 1933 FOREIGN PATENTS GreatBritain Mar. 25, 1929

